One vertex per element, one color per generator, with an edge from x to x·s.
(1,2,6,8)(3,7,5,4)(9,10,13,12)(11,15,16,14)(21,29)(25,30)(26,32)(28,31)(1,3,6,5)(2,7,8,4)(9,11,13,16)(10,14,12,15)(17,18)(19,20)(21,25)(22,23)(24,27)(26,28)(29,30)(31,32)(2,8)(4,7)(9,10,13,12)(11,14,16,15)(18,23)(20,24)(25,30)(28,31)(1,4)(2,3)(5,8)(6,7)(9,10,13,12)(11,14,16,15)(17,19)(18,24)(20,23)(21,26)(22,27)(25,31)(28,30)(29,32)(1,3,6,5)(2,7,8,4)(9,10,13,12)(11,14,16,15)(17,20,22,24)(18,19,23,27)(21,28,29,31)(25,26,30,32)(1,5,6,3)(2,4,8,7)(9,12,13,10)(11,15,16,14)(17,21)(18,25)(19,26)(20,28)(22,29)(23,30)(24,31)(27,32)A Cayley diagram is a choice, not a fact about the group. Another drawing of this group — in a book, or on a different generating set — may look nothing like this one.